import java.util.Scanner;

public class java20231029 {
    public static void main1(String[] args) {
        System.out.println("\\\"hello\\\"");
    }


    public static void main2(String[] args) {
        short a=128;
        byte b=(byte)a;
        System.out.println("a="+a);
        System.out.println("b="+b);
    }



    public static void main3(String[] args) {
        double x=2.0;
        int y=4;

        System.out.println(x/=++y);
    }

    /*public static void main(String[] args) {
        int a = 10;
        System.out.println(!a);
    }*/

    public static void main5(String[] args) {
        Scanner scanner= new Scanner(System.in);
        int a=scanner.nextInt();
        /*System.out.println(a);*/
        int i=0;
        if(a==2){
            System.out.println("2是素数");
        }
        for(i=2;i<a;i++){

            if(a%i==0) {
                System.out.println(a+"不是素数");
                break;
            }
            System.out.println(a+"是素数");
        }
    }

    public static void main6(String[] args) {
        int i = 0;
        int j = 0;
        int flag=1;
        for(i = 1; i <= 100; i ++){
            flag=1;
            for(j = 2;j < i; j ++){
                if(i%j == 0) {
                    flag = 0;
                    break;
                }
            }
            if(flag==1){
                System.out.println(i);
            }
        }
    }

    public static void main7(String[] args) {
        int year=0;
        for( year = 1000; year <= 2000; year ++){
            if(( year % 4 == 0 && year % 100 != 0)||( year % 400)== 0){
                System.out.println(year+"年是闰年");
            }
        }
    }

    public static void main(String[] args) {
        int i=0;
        int count=0;
        for(i=1;i<=100;i++){
            if(i%9==0){
                count++;
            }
            if(i/9==0){
                count++;
            }
        }
        System.out.println(count);
    }
}
